\[ 4 y(x) y''(x)-3 y'(x)^2+4 y(x)=0 \] ✓ Mathematica : cpu = 0.227886 (sec), leaf count = 43
DSolve[4*y[x] - 3*Derivative[1][y][x]^2 + 4*y[x]*Derivative[2][y][x] == 0,y[x],x]
\[\left \{\left \{y(x)\to \frac {\left (c_1{}^2 x^2+2 c_2 c_1{}^2 x-64+c_2{}^2 c_1{}^2\right ){}^2}{256 c_1{}^2}\right \}\right \}\] ✓ Maple : cpu = 0.962 (sec), leaf count = 67
dsolve(4*diff(diff(y(x),x),x)*y(x)-3*diff(y(x),x)^2+4*y(x)=0,y(x))
\[y \left (x \right ) = 0\]